"Lincoln," "Zero Dark Thirty" Earn Writers Guild Nominations

"Argo" is also up for adapted screenplay

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"Lincoln" is partially based on the book, "Team of Rivals: The Political Genius of Abraham Lincoln."

"Lincoln" and "Zero Dark Thirty" are adding to their front-runner status for Hollywood's awards season.

The two dramas earned nominations from the Writers Guild on Friday for outstanding screen writing.

"Lincoln" is up for adapted screenplay, along with "Argo," ''Silver Linings Playbook," ''Life of Pi" and "The Perks of Being a Wallflower."

"Zero Dark Thirty" was nominated for original screenplay, along with "Flight," ''Looper," ''The Master" and "Moonrise Kingdom."

In the documentary category, "The Central Park Five," ''The Invisible War," ''Mea Maxima Culpa, "West of Memphis," ''We Are Legion: The Story of the Hacktivists," and "Searching for Sugar Man" earned nominations.

Winners will be announced during simultaneous ceremonies in New York and Los Angeles on Feb. 17.